Urbestfriend just sold his Agility 50, which was bought new.
In the 3 years I had it, I ended up putting 3 batteries in it.
I've had three Kymcos and I'm not sure the original batteries are
the best. Also this particular bike was always hard to start in cold
weather. Sometimes once it got running, it took 5 or more minutes
to warm up enough to go. In one case, I thought it was the solenoid,
bought a new one, but it was the battery.
Take your battery to a shop such as Interstate and they can advise you
of it's condition.